Unknown

Dataset Information

0

A simple, tunable, and highly sensitive radio-frequency sensor.


ABSTRACT: We report a radio frequency (RF) sensor that exploits tunable attenuators and phase shifters to achieve high-sensitivity and broad band frequency tunability. Three frequency bands are combined to enable sensor operations from ∼20 MHz to ∼38 GHz. The effective quality factor (Qeff ) of the sensor is as high as ∼3.8 × 10(6) with 200 μl of water samples. We also demonstrate the measurement of 2-proponal-water-solution permittivity at 0.01 mole concentration level from ∼1 GHz to ∼10 GHz. Methanol-water solution and de-ionized water are used to calibrate the RF sensor for the quantitative measurements.

SUBMITTER: Cui Y 

PROVIDER: S-EPMC3751936 | biostudies-other | 2013 Aug

REPOSITORIES: biostudies-other

Similar Datasets

| S-EPMC4861156 | biostudies-literature
| S-EPMC3358486 | biostudies-literature
| S-EPMC8501031 | biostudies-literature
| S-EPMC4846859 | biostudies-literature
| S-EPMC5535258 | biostudies-literature
| S-EPMC9245349 | biostudies-literature
| S-EPMC5948501 | biostudies-literature
| S-EPMC6386780 | biostudies-literature
| S-EPMC8193410 | biostudies-literature